JPS6027260Y2 - sealing device - Google Patents

sealing device

Info

Publication number
JPS6027260Y2
JPS6027260Y2 JP1979168333U JP16833379U JPS6027260Y2 JP S6027260 Y2 JPS6027260 Y2 JP S6027260Y2 JP 1979168333 U JP1979168333 U JP 1979168333U JP 16833379 U JP16833379 U JP 16833379U JP S6027260 Y2 JPS6027260 Y2 JP S6027260Y2
Authority
JP
Japan
Prior art keywords
contact
shaft
sealing
housing
sealing piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1979168333U
Other languages
Japanese (ja)
Other versions
JPS5685760U (en
Inventor
光一 内山
Original Assignee
エヌオーケー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by エヌオーケー株式会社 filed Critical エヌオーケー株式会社
Priority to JP1979168333U priority Critical patent/JPS6027260Y2/en
Publication of JPS5685760U publication Critical patent/JPS5685760U/ja
Application granted granted Critical
Publication of JPS6027260Y2 publication Critical patent/JPS6027260Y2/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3456—Pressing means without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Description

【考案の詳細な説明】 本考案は密封装置に関し、更に詳しくは、摩擦損失が低
く、しかもシール性に優れた密封装置を提供するもので
ある。[Detailed Description of the Invention] The present invention relates to a sealing device, and more specifically, it provides a sealing device with low friction loss and excellent sealing performance.

互いに相対回転運動をなす二部材間に使用される接触運
動方式による密封装置においては、摺動摩擦による駆動
力の損失を免れることができないが、近時この摩擦損失
を低減させることについての要求が次第に増加している
。In a contact movement type sealing device used between two members that make relative rotational motion to each other, loss of driving force due to sliding friction cannot be avoided, but recently there has been a growing demand for reducing this friction loss. It has increased.

本考案は上記した摩擦損失低減に対する要求に鑑みてな
されたもので、互いに相対回転運動をなす二部材の回転
側部材に、ゴム様弾性材をもって製られ、末広がりの截
頭円錐形状を示すシール部片を付設するとともに、径方
向に伸びる平面を形威し、固定側部材に上記シール部片
が弾性的に接触する接触面と、回転側の径方向面に対し
、微小隙間を保って対向する環状の平面とを形成し、回
転側部材の径方向平面と固定部材側の環状平面の少なく
とも一方に、単条又は複数条の螺旋状のねじ溝を付し、
更に相対回転運動二部材のハウジング側に、繊維材料を
もって製せられ、軸周面に摺動接触するダストリップを
配置して、停止時には、シール部片と固定側部材の接触
面との弾性接触によって内部流体の漏洩に対するシール
性を保持させ、運転時には、シール部片に作用する遠心
力により固定部材との接触を解除して摺動による摩擦を
消滅させるとともに、微小隙間を保って対向する面上に
付設されたねじ溝が生起させるねじ作用により内部流体
の漏洩に対するシール機能を保持させるとともに、停止
時及び運転時を通して、ダストリップにより大気内異物
の内部への侵入を阻止させるようになして、異物の侵入
阻止及び内部流体の漏洩防止機能を確実に保つとともに
、回転に伴なう摩擦による駆動力に損失を最低に抑制し
ようとするものである。The present invention has been developed in view of the above-mentioned demand for reducing friction loss.The present invention is made of a rubber-like elastic material and has a seal portion in the shape of a truncated cone that widens toward the end, on the rotating side member of the two members that rotate relative to each other. The contact surface where the seal piece elastically contacts the stationary side member and the radial surface on the rotating side face each other with a small gap. forming an annular plane, and attaching a single or multiple spiral thread groove to at least one of the radial plane of the rotating member and the annular plane of the fixed member,
Furthermore, a dust lip made of a fiber material and in sliding contact with the circumferential surface of the shaft is arranged on the housing side of the two members that move relative to each other, so that when stopped, elastic contact between the sealing piece and the contact surface of the stationary side member is made. During operation, the centrifugal force acting on the seal part releases the contact with the fixed member and eliminates the friction caused by sliding, and the opposing surfaces maintain a small gap. The screw action produced by the thread groove provided on the top maintains a sealing function against leakage of internal fluid, and the dust lip prevents atmospheric foreign matter from entering the inside during stoppage and operation. This is intended to reliably maintain the function of preventing the intrusion of foreign matter and the leakage of internal fluid, and to minimize the loss of driving force due to friction associated with rotation.

以下、図面に基づいて本考案による密封装置の実施例に
ついて説明する。Hereinafter, embodiments of the sealing device according to the present invention will be described based on the drawings.

第１図の実施例は、軸が回転し、ハウジングが固定され
ている装置に対するものであって、嵌合円筒部５に連接
して外方に広がり、表面に螺旋状のねじ溝２０を付され
た径方向面７を形成され、該径方向面７の背面に、ゴム
様弾性材をもって製せられ、末広がりの截頭円錐形状を
呈するシール部片６を付されて成る回転環４が、径方向
面７をハウジング２の内方に設けられた環状平面１７に
封部微小間隙を保って対向させるように、嵌合円筒部５
により軸１に嵌着させられて軸１とともに回転する如く
なされており、一方、固定円筒部１５から内方へ伸びる
径方向部に、径方向に広がる環状の接触面１６を形成さ
れ、接触面１６の反対側の面上に、フェルト等の繊維材
料をもって製せられたダストリップ２３を付されて成る
固定環が、固定円筒部１５をハウジング２の嵌合孔に挿
着されて、接触面１６に回転環４のシール部片６を弾性
的に接触させ、ダストリップ２３を軸１の周面に接触さ
せている。The embodiment shown in FIG. 1 is for a device in which the shaft rotates and the housing is fixed. A rotary ring 4 is formed with a radial surface 7, and is provided with a sealing piece 6 made of a rubber-like elastic material and having a truncated conical shape expanding toward the end, on the back surface of the radial surface 7, The fitting cylindrical portion 5 is arranged so that the radial surface 7 faces the annular plane 17 provided inside the housing 2 with a small gap between the sealing portions.
It is fitted onto the shaft 1 and rotates together with the shaft 1, and on the other hand, an annular contact surface 16 that extends in the radial direction is formed in a radial portion extending inward from the fixed cylindrical portion 15, and the contact surface A fixing ring is provided with a dust lip 23 made of a fiber material such as felt on the opposite surface of the fixing ring 16, and the fixing cylindrical part 15 is inserted into the fitting hole of the housing 2 and the contact surface is fixed. The sealing piece 6 of the rotary ring 4 is brought into elastic contact with the rotary ring 16, and the dust lip 23 is brought into contact with the circumferential surface of the shaft 1.

第２図の実施例は、軸が固定され、ハウジング側が回転
する機械装置に対するものであって、末広がりの截頭円
錐形状を示すシール部片６及びフェノ叶等の繊維材料に
よるダストリップ２３を有する回転環４が、嵌合円筒部
５をノ）ウジング２の嵌合孔に挿着され、断面り字状の
固定環が、径方向部の一方の環状平面１７を、ハウジン
グ２側に設けられ、径方向に伸びて螺旋状のねじ溝２０
を付された径方向面７に対し、微小間隙を保つように対
向させ、反対側の接触面１６にシール部片６を弾性的に
接触させている。The embodiment shown in FIG. 2 is for a mechanical device in which the shaft is fixed and the housing side rotates, and has a sealing piece 6 exhibiting a truncated conical shape that widens toward the end, and a dust lip 23 made of a fiber material such as phenol. The rotating ring 4 is inserted into the fitting hole of the housing 2 through the fitting cylindrical part 5, and a fixed ring having an angular cross section is provided with one annular plane 17 of the radial part on the housing 2 side. , a spiral thread groove 20 extending in the radial direction
The sealing piece 6 is made to face the radial surface 7 provided with a mark so as to maintain a small gap, and is brought into elastic contact with the contact surface 16 on the opposite side.

上記の構成になる本考案の密封装置は運転停止時に、回
転環４のシール部片６と固定環の接触面１６との弾性接
触により、内部流体の外部への漏出を阻止し、運転時に
、シール部片６が遠心力の作用により外方に拡張して接
触面１６との接触を解除させることにより、接触摺動に
伴なう摩擦損失を解消させるとともに、固定側の環状平
面１７に対し微小間隙を保って対向する回転側の径方向
面７上に付されたねじ溝２０が生起させるねじ作用によ
り内部流体の外部への漏出を阻止し、ダストリップ２３
により、停止時及び運転時を通して外部の塵埃等の内部
への侵入を阻止するもので、軸１の周面に対する接触は
運転時における摺動摩擦を最低の値に抑制するように配
慮されている。The sealing device of the present invention having the above structure prevents internal fluid from leaking to the outside by elastic contact between the sealing part 6 of the rotating ring 4 and the contact surface 16 of the stationary ring when the operation is stopped, and when the operation is stopped. The sealing piece 6 expands outward due to the action of centrifugal force and releases contact with the contact surface 16, thereby eliminating friction loss caused by contact sliding, and also The internal fluid is prevented from leaking to the outside by the screw action generated by the thread grooves 20 formed on the opposing rotating side radial surfaces 7 while maintaining a small gap, and the dust lip 23
This prevents external dust and the like from entering the interior during both stoppage and operation, and the contact with the circumferential surface of the shaft 1 is designed to suppress sliding friction to the lowest value during operation.

本考案による密封装置が上記した構成要件を備えている
ことにより、下記する作用効果がもたらされる。Since the sealing device according to the present invention has the above-described structural requirements, the following effects are brought about.

運転停止時に、固定環の接触面１６に対し弾性接触して
シール作用を示すゴム様弾性材製のシール部片６が、回
転時に、遠心力の作用を受けて外方へ拡張し、接触面１
６に対する接触を解除されるので、摺動摩擦による駆動
力の損失が防止され、一方、ねじ溝２０により、回転環
４の径方向面７と固定環の環状平面１７の間に形成され
た微小間隙に生起されるねじ作用が、シール部片６の外
方に位置する環状の空室内にある流体を内方（図上右方
）へ送り込むように作用するので、シール部片６が接触
面１６に対し、非接触状態に保たれるにもかかわらず内
部流体の外部への漏出が完全に阻止されるとともに、停
止時及び運転時を通して外部異物の内部への侵入がダス
トリップ２により阻止されるので、運転時及び停止時を
通して、シール機能が完全に保持され、かつ摺動摩擦抵
抗による駆動力の損失が最低限に抑止される。When the operation is stopped, the sealing piece 6 made of a rubber-like elastic material that exhibits a sealing action by elastically contacting the contact surface 16 of the fixed ring expands outward under the action of centrifugal force during rotation, and the contact surface 1
6 is released, loss of driving force due to sliding friction is prevented, and on the other hand, the minute gap formed by the thread groove 20 between the radial surface 7 of the rotating ring 4 and the annular plane 17 of the stationary ring The threaded action generated in the sealing piece 6 acts to send the fluid in the annular cavity located outside the sealing piece 6 inward (to the right in the figure), so that the sealing piece 6 touches the contact surface 16. On the other hand, the dust lip 2 completely prevents the internal fluid from leaking to the outside despite being maintained in a non-contact state, and also prevents external foreign matter from entering the interior during stoppage and operation. Therefore, the sealing function is completely maintained during operation and during stoppage, and loss of driving force due to sliding friction resistance is suppressed to a minimum.

尚、図示の実施例においては、ねじ溝２０が回転側の径
方向面７に付されているが、固定側の環状平面１７側に
設けるか、又は径方向面７と環状平面１７の双方に設け
ても良く、又接触面１６は第１図に鎖線をもって示す如
く、円錐曲面とすることも可能である。In the illustrated embodiment, the thread groove 20 is provided on the rotating side radial surface 7, but it may be provided on the stationary side annular plane 17 side, or on both the radial direction surface 7 and the annular plane 17. Alternatively, the contact surface 16 can be a conically curved surface, as shown by the dashed line in FIG.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案による密封装置の実施例を示す断面図、
第２図は同じく他の実施例を示す断面図である。 １・・・・・・軸、２・・・・・・ハウジング、４・・
・・・・回転環、５・・・・・・嵌合円筒部、６・・・
・・・シール部片、７・・・・・・径方向面、１５・・
・・・・固定円筒部、１６・・・・・・接触面、１７・
・・・・・環状平面、２０・・・・・・ねじ溝、２３・
・・・・・ダストリップ。FIG. 1 is a sectional view showing an embodiment of the sealing device according to the present invention;
FIG. 2 is a sectional view showing another embodiment. 1...Axis, 2...Housing, 4...
... Rotating ring, 5 ... Fitting cylindrical part, 6 ...
...Seal piece, 7...Radial direction surface, 15...
... Fixed cylindrical part, 16 ... Contact surface, 17.
...Annular plane, 20...Thread groove, 23.
...Dust lip.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 相対回転運動をなす軸１及びハウジング２の回転側部材
に、ゴム様弾性材料をもって製せられ、末広がりの截頭
円錐形状を呈するシール部片６を付設するとともに、径
方向面７を形成腰前記軸１及びハウジング２の固定側部
材に、前記シール部片６と弾性接触する接触面１６及び
前記径方向面７に対し微小隙間を保って対面する環状平
面１７を形威し、前記径方向面７及び前記環状平面１７
の少なくとも一方に、ねじ溝２０を形威し、前記ハウジ
ング２に、繊維材料をもって製られ、前記軸１の周面と
摺動接触するダストリップ２３を付設して成る密封装置
。A sealing piece 6 made of a rubber-like elastic material and having a truncated conical shape that widens at the end is attached to the rotating side members of the shaft 1 and the housing 2 that make relative rotational movement, and a radial surface 7 is formed at the waist. The shaft 1 and the fixed side member of the housing 2 are provided with a contact surface 16 that makes elastic contact with the sealing piece 6 and an annular plane 17 that faces the radial surface 7 with a small gap therebetween. 7 and the annular plane 17
A sealing device comprising a threaded groove 20 formed on at least one of the housings 2 and a dust lip 23 made of a fiber material and in sliding contact with the circumferential surface of the shaft 1.
JP1979168333U 1979-12-05 1979-12-05 sealing device Expired JPS6027260Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979168333U JPS6027260Y2 (en) 1979-12-05 1979-12-05 sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979168333U JPS6027260Y2 (en) 1979-12-05 1979-12-05 sealing device

Publications (2)

Publication Number Publication Date
JPS5685760U JPS5685760U (en) 1981-07-09
JPS6027260Y2 true JPS6027260Y2 (en) 1985-08-16

Family

ID=29679154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979168333U Expired JPS6027260Y2 (en) 1979-12-05 1979-12-05 sealing device

Country Status (1)

Country Link
JP (1) JPS6027260Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59170565A (en) * 1983-03-18 1984-09-26 カ−ル・フロイデンベルク Packing ring
JPH0614136Y2 (en) * 1988-05-30 1994-04-13 エヌオーケー株式会社 Sealing device

Also Published As

Publication number Publication date
JPS5685760U (en) 1981-07-09

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